Ultraschall zur Erfassung innerer Freiformgeometrien auf Werkzeugmaschinen
These days industrial production metrology is focussing more and more on in-line-quality-control with a 100% inspection. The recent production metrology of hollow structures can not cope with this. An automated, fast and non destructive measurement of the wall thickness is demanded. Against this background the goal of this research work is the development of an ultrasonic measuring module, which permits an machine-integrated topography measurement of hollow parts. The module is based on the ultrasonic time-of-flight method, which can perform distance and thickness measurements even at only one-sided accessibility of the measuring point. A wavelet-based procedure for signal conditioning is presented, which permits a reliable measurement even under critical acoustic conditions. Therefrom production-suited measuring strategies are derived and enhanced by algorithms for decreasing the measurement uncertainty. The mechanical and electrical integration of the measuring module into a machine tool is described in detail. Finally the suitability in principle of the measuring module for the topography measurement units is verified by real parts in practice, as well as the whole process chain for the form optimisation.
info:eu-repo/classification/ddc/620, Ingenieurwissenschaften, Ultraschall, Messtechnik, Werkzeugmaschinen, Hohlteile, Maschinenintegration
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